Furnace structure



F. SEYBOTH FURNACE STRUCTURE 4 sheets-sheet 1 Filed June 5. 1922 A i Q 'I1 Il April 29 1924.

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F. SEYBOTH FURNACE STRUCTURE Filed June 3. 1922 4 Sheets-$heet 2 gr: MM@ Mw 4 Sheets-Sheet 4 F SEYBOTH FURNACE STRUCTURE Filed June 5.

Patented pr. 29, 1924.

UNKTE STATES Lisa? FURNACE STRUCTURE.

kApplication filed June 3,

To all whom t may concern.'

VBe it known that I, FRITZ SEYBOTH, of German nationality, residing at Zwickau, Saxony, Germany, have invented certain new and useful Furnace Structures; and I do hereby declare the following to be a full,

clear, and exact description of the invenof obtaining better combustion and, at the same time, effecting a cooling of the grate itself.

Another object of the invention is the improved arrangement of the grate bars in such a manner that some or all of the grate bars of the stationary steps may be rocked or reciprocated, the pivots for such rocking movement, or the supports for the reciprocatory movement respectively, being formed by rose pipes extending across the furnace and serving as supports for the grate bars 'whereby great simplicity of construction is obtained.

'fr0 According to the invention the grate bars of the stationary steps are directly supported upon the rose pipes which are extended across the furnace chamber and attached to steam supply pipes at the side thereof,

l5 and having their perforations at their forward sides, so that the jets of steam issuing therefrom are directed against the stationary steps, further into the layer of fuel above same, and to also sweep the stoking $0 elements moving between the respective stationary steps.

The accompanying drawings illustrate the invention by way of example. In these drawingsf Fig. l is a'sectional elevation of the iinproved grate having 4movable and stationary steps, of which latter some are arranged to be rocked byV hand as by means of a 'special tool provided for the purpose. te Fig. 2 shows the hand operated tool for rocking the movable grate bars of the stationary steps.

Fig. 3 illustrates a set of fixed grate bars 1922. Serial No. 565,712.

of the stationary steps in side elevation and plan view.

Fig. 4 shows similar views. of a set of movable grate bars of a stationary step.

Fig. 5 is a View similar to Fig. l of a modified form of the grate having mechanically operated stoking elements.

Fig. v6 is a cross section through astationary 'step according to Fig. 5.

Fig. 7 shows a fixed grate bar of a stationary step according to Fig. 5 in side elevation and in plan view.' f

Fig. 8 is the side elevation and plan view of a movable bar of a stationary step also of the grate shown in Fig. 5.

Fig. 9 shows in front elevation the movable bars of a stationary step connected to one another by a couplingv rod. A

Fig. l() is a side view, partly in section, similar to Fig. 5 but with the movable elements of the stationary steps and the stoking elements in advanced position.

`rangement in which the drive of the movable members of a stationarystep,and of the guides belonging thereto, is effected in a manner which is slightly different` to Vthat pertaining to the foregoing figures.

Fig. 12 diagrammaticallyshowsthe drive according to'Figs'. Y5 and 10 for interrupted `Referrin'g' to Figs. 1 to` L of the drawings, `l are Vthe stoking elements, 2 the fixedlmembers and 3 the movable, i. e., iny this case the .rocking members of the stationary steps.' 4

. Fig. 1l shows diagrammatically van are -rose pipes on which the members of the Y stationary steps are supported and through which thc steam passes into `and vbetween the elements. 5 are other rose or sprinkler ico pipes. against which the members of the stationary steps bear from belowxand which, at the'same time,serve vto effecty a cooling of lthestoking elements lby steam playing on Athem from below. Rocking of the movable bars 3 takes place about/the rosey pipes grate.

serving as pivots; it is effected by a tool 6 (Fig. 2) adapted to grip around the rod 7 which connects all the movable members of each step and, at the same time, is supported in the side walls of the movable members. Each of the grate bars of the stationary steps has a notch or cavity 8, and all these cavities in unison form a hollow space .extending over each of the stationary steps and through which the steam can be uniformly distributed over all air passages of the step.

In Fig. 5 the rod coupling the movable members of each stationary step is again denoted by 7; 9 are connecting links serving to reciprocate the movable members, 10 is the rod serving to effect the simultaneous coupling of all of the links 9 to the main driving rod 11 (sce also Fig. 12). The numeral 12 (Fig. 6) denotes the steam supply pipe for all the rose pipes. 13 (Figs. 5, 8, and 9) are thereciprocating movable members of the stationary steps. In order to avoid the rose pipes becoming worn out soon by the to and fro movement of the elements, the said movable members are not supported on the rose or sprinkler pipes themselves 'but are guided between the ledges 14 and 15 of the side walls 2O of the The movable members are fitted along their top edges with flanges 16 (Fig. 9) by means of which they are supported and guided on the fixed members. In Fig. 6 the movable members are indicated by close hatching.

It is evident, that bythe permanent connection of the links 9 to the main driving bar 11 the reciprocating movement of the movable members 3 will be positively controlled, but preferably they are connected in the manner shown in Figs. 5 and 10 by means of hooks into which their ends are formed, so that the strokes of the movable members will be shorter than those of the stoking elements.

If desired, the hooks at the ends of the' connecting links may be provided with some arrangement of any known or convenient kind for varying the size of their openings. In Fig. 11 the rod 21 effecting the drive of the movable members of the fixed steps is independent of the main driving rod 11.

Rod 21 also is provided with a hook-shaped portion at its upper end by the aid of which it may be placed on to the journal of the driving lever. The stroke of the rod 21 is denoted by b in Fig. 11, while c illustrates the stroke of the stoking elements. Also with this arrangement the driving lever may be so constructed that the stroke may be regulated.

In Fig. 13 the driving rod 21 for the movable members of the fixedor stationary steps are coupled to a bell crank lever 17 turning on a pivot 19. This lever is capable of being rocked by hand, and it is evident, that the separate pivot 19 may be omitted and the bell crank lever 17 arranged to pivot on the main drivingshaft 18 for the stoking elements.

1. In a stepped furnace grate the combination with movable stoking elements arranged between stationary steps of grate bars, of a set of rose pipes extending across the grate and serving to directly support the stationary steps, lateral supply pipes to supply the said rose pipes with steam, perforations in the rose pipes located approximately in their front sides, and another set of rose pipes arranged at about the firing height of the stationary steps and having their perforations directed toward the movable stroking elements.

2. In a stepped furnace grate the combination with movable stoking elements arranged betweenv stationary steps ofV grate bars, of a set of steam rose pipes extending across the grate and serving to directly support the stationary steps, lateral supply pipes for the said rose pipes, perforations in the rose pipes direc-ted forwardly in between the grate bars of the stationary steps and the layer of fuel upon same, another set of rose pipes arranged at about the firing height of the stationary steps and having their perforations located to direct the steam against the stoking elements from below, movable elements between the members of the stationary steps, and means to move said movable element while maintaining contact with their supporting rose pipes.

3. In a stepped furnace grate the combination with movable stoking elements arranged between stationary steps of grate 1 l bars, of a set of steam rose pipes extending across the grate and serving to directly sup- Y port the stationary steps, lateral supply pipes for the said rose pipes, perforations in the rose pipes directed forwardly in between the grate bars of the stationary steps and the layer of fuel upon same,'another Vset of rose pipes arranged at about the firing height of the stationary steps and having their perforations located to direct the steam against the stoking elements from below, movable elements between the members of the stationary steps, andY Ineans to move said movable elements from the driving` mechanism of the stoking elements.V

ll-. In a stepped furnace grate the combination with movable stoking elements arranged between stationary steps of grate bars, of a set of steam rose pipes extending across the grate and serving to directly support the stationary steps, lateral supplyv pipes for the said rose pipes, perforations in the rose pipes directed forwardly in between the grate bars of the stationary steps .andthe layer of fuel upon same, another set of rose pipes arranged at about the ring height of the stationary steps and having their perforations located to direct the steam against the stoking elements from below, movable elements between the members of the stationary steps, a driving mechanism to impart reciprocating movement to the stoking elements, driving means for the movable elements of the stationary steps, and coupling members to simultaneously couple all the movable elements to the driving mechanism of the stoking elements.

5. In a stepped furnace grate the combination with movable stoking elements arranged between stationary steps of grate bars, of a set of steam rose pipes extending across the grate and serving to directly support the stationary steps, lateral supply pipes for the said rose pipes, perforations in the rose pipes directed forwardly in between the grate bars of the stationary steps and the layer of fuel upon same, another set of rose pipes arranged at about the iii'- ing height of the stationary steps and have ing their perforations located to direct the steam against the stoking elements from below, movable elements between the members of the stationary steps, a driving rod to impart reciprocating movement to the stoking elements, a coupling bar for all the movable elements of a stationary step, connecting links to connect the said movable elements to the coupling bar, and hook-shaped extennation with movable stoking elements arranged between stationary steps of grate bars, of a set of steam rose pipes extending across the grate and serving to directly sup is y port the stationary steps, lateral supp pipes for the said rose pipes, perforations in Vthe rose pipes vdirected forwardly in between the grate bars of the stationary steps and the layer of fuel upon same, another set of rose pipes arranged at about the firing height of the stationary steps and having their perforations located to direct the steam against the stoking elements from below, movable elements between the members of the stationary steps, a driving rod to impart reciprocating movement to the stoling elements, a coupling bar for all the movable elements of the stationary steps, connecting links to connect the said movable elements to the coupling bar, and hook-shaped extensions to the connecting links having enlarged hook openings for connection to the driving rod of the stoking elements.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRITZ SEYBOTH.

Witnesses: MARGARET MENZEL, CECILIA FABURG. 

